/* fpending.c -- return the number of pending output bytes on a stream
- Copyright (C) 2000, 2004, 2006-2007, 2009-2016 Free Software Foundation,
+ Copyright (C) 2000, 2004, 2006-2007, 2009-2021 Free Software Foundation,
Inc.
This program is free software: you can redistribute it and/or modify
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Jim Meyering. */
#include "stdio-impl.h"
+/* This file is not used on systems that already have the __fpending function,
+ namely glibc >= 2.2, Solaris >= 7, UnixWare >= 7.1.4.MP4, Cygwin >= 1.7.34,
+ Android API >= 23. */
+
/* Return the number of pending (aka buffered, unflushed)
bytes on the stream, FP, that is open for writing. */
size_t
/* Most systems provide FILE as a struct and the necessary bitmask in
<stdio.h>, because they need it for implementing getc() and putc() as
fast macros. */
-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
+ /* GNU libc, BeOS, Haiku, Linux libc5 */
return fp->_IO_write_ptr - fp->_IO_write_base;
#elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
- /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Android */
+ /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin < 1.7.34, Minix 3, Android */
return fp->_p - fp->_bf._base;
#elif defined __EMX__ /* emx+gcc */
return fp->_ptr - fp->_buffer;
#elif defined __minix /* Minix */
return fp_->_ptr - fp_->_buf;
-#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, MSVC, NonStop Kernel */
+#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, UnixWare, mingw, MSVC, NonStop Kernel, OpenVMS */
return (fp_->_ptr ? fp_->_ptr - fp_->_base : 0);
#elif defined __UCLIBC__ /* uClibc */
return (fp->__modeflags & __FLAG_WRITING ? fp->__bufpos - fp->__bufstart : 0);
return fp->__bufp - fp->__buffer;
#elif defined EPLAN9 /* Plan9 */
return fp->wp - fp->buf;
-#elif defined __VMS /* VMS */
- return (*fp)->_ptr - (*fp)->_base;
#else
# error "Please port gnulib fpending.c to your platform!"
return 1;